随着矿山建设的高速发展和矿井巷道支护技术要求的提高,特别是锚索主动支护的广泛应用,对于永久井巷、隧道支护面喷射砼工艺仍需要不断地实践与探索。根据多年中外矿井建设经验,对井巷施工喷射砼的“配比和强度”的进行了实验总结及分析,同时为其它类似矿井巷道在施工中提供了参考借鉴的经验。 With the rapid development of mine construction and the improvement of mine roadway support technology requirements, especially the active application of anchor cable, it is still necessary to constantly practice and explore the shotcrete technology of permanent mine roadway and tunnel support surface. According to many years of experience in mine construction in both China and foreign countries, experiments and conclusions are made on the “ratio and strength” of shotcrete in well construction. At the same time, the experience of other similar mine tunnels in construction is provided.